A student who was hit by a car Wednesday afternoon while running in the street was hospitalized with a broken leg, Sgt. John Hurd said.
At about 2:15 p.m. emergency crews were sent to a collision at the intersection of Fourth and Wood streets, near football field.
Witnesses told police the student was running in between stop-and-go traffic on Fourth Street when he crossed over into the westbound lane and in front of a car.
"He got lucky," Hurd said. "It could have been a lot worse."
At the scene, a Honda Civic's windshield was smashed, and police were interviewing a woman, who was visibly upset.
Hurd said the student was taken to Eden Medical Center in Castro Valley.
Police said another student was hit by a vehicle Wednesday afternoon while crossing the street near El Padro and Ontario drives.
The student in that case suffered minor injuries, Hurd said.
In the wake of Wednesday's accidents, police are reminding motorists to be extra cautious driving near schools.
"It's also a good reminder for parents to talk with their kids about traffic safety," Hurd said.
Police also have provided back-to-school traffic safety tips .